Curtis J then made orders consequent upon these observations.
53 The effect of the last-mentioned order was, as Mr Bathurst submitted, effectively to increase BIL's liability to 87.45% of Mr Royal's verdict. In other words, by the order made pursuant to the supplementary judgment, Eraring Energy was liable for 10% of Mr Royal's verdict, BAL was made liable for 2.55% and BIL was made liable for 87.45%. This, it seems to me, is a result quite different to that which Curtis J really intended (that being "to achieve a result whereby the entitlement in tort would be a neutral factor in the final judgment").
54 With respect to his Honour, I have found the arithmetic calculations he undertook not always easy to follow. The details of the calculations are frequently not made explicit and in some instances the legal basis for them is left to the reader to infer. The consequence of these complexities, however, is that despite saying, in his judgment of 19 July 2001, that "I apportion liability 10% to Eraring Energy, 15% to BAL and 75% to BIL," the final result following Curtis J's supplementary judgment of 14 December 2001 is that liability was apportioned 10% to Eraring Energy, 2.55% to BAL and 87.45% to BIL.
55 Mr Bathurst submitted that the approach of Curtis J involved a double counting in the sense described in Daniels v Anderson (1995) 37 NSWLR 438 by Clarke and Sheller JJA at 579 to 580. The facts in this case, however, are not comparable to those in Daniels v Anderson. Curtis J did not make orders requiring BIL to pay twice for the same damage (cf Doyle v Pick and Rickwood [1965] WAR 95 at 96).
56 Nevertheless, it seems to me, there is a serious problem in the approach adopted by Curtis J, namely, the inconsistency between the apportionment in the contribution proceedings and that in the direct action.
57 Before considering the implications and consequences of that inconsistency, I reiterate that it does seem to me to have been his Honour's basal intent to hold that the responsibility for Mr Royal's damages should be apportioned 10% as to Eraring Energy, 75% as to BIL and 15% as to BAL. In the light of my conclusions in regard to the other grounds of appeal, to which I later refer, I would make no alteration to this apportionment.
58 The particulars of negligence pleaded by BAL against BIL in the contribution proceedings were in substance the same as those pleaded by BAL against BIL in the direct action. Mr Inatey SC, who together with Mr Miller appeared for BAL, correctly accepted that the conduct of BIL that formed the basis of Curtis J's findings in the contribution proceedings was the same conduct that formed the basis of his Honour's J's findings in the direct action.
59 In fixing upon the apportionment between the three tortfeasors in the contribution proceedings, Curtis J was required to examine the departure of each one of them from the standards of the reasonable person: Watt v Bretag (1982) 56 ALJR 760. In other words, the negligence of each one of the tortfeasors has to be compared with the others. The finding of fault as to 10: 75: 15 is the product of such an examination.
60 Curtis J was required to undertake a similar exercise regarding the negligence of BIL and the contributory negligence of BAL in the direct action. On the face of it, there is nothing to suggest that the apportionment in the two sets of proceedings should differ.
61 Mr Inatey submitted that, although BIL's conduct was the same in both sets of proceedings, the apportionment could differ because the damages were different. He submitted that the difference arose because in the contribution action the damages involved were the damages suffered by Mr Royal, whereas in the direct action the damages were those suffered by BAL. He argued that the two losses were different and separate; hence it was open to Curtis J to make different findings as to fault.
62 I accept that the damages in each instance are different in the sense that they were sustained by different parties. But I see no justification in the particular circumstances of this case for distinguishing between the degrees of fault in the two different sets of proceedings. I accept that the causal potency of the negligence conduct in each instance is of vital importance and, where damages differ, causal potency may differ. In such circumstances, the same negligent conduct may have different causal consequences and hence may give rise to different degrees of fault where more than one tortfeasor is involved. But in the circumstances of this case, there is no relevant difference in the causative effect of the conduct of BAL and BIL insofar as it brought about, on the one hand, Mr Royal's damages, and, on the other, BAL's damages. The incurring by Mr Royal of damages, caused by the conduct of BAL and BIL, resulted in BAL suffering damages brought about by the very same conduct.
63 In the circumstances, I consider that it was not open to Curtis J to make findings in the direct action concerning the degrees of fault of BAL and BIL that differed from the findings he made in the contribution proceedings. In any event, as I understand his Honour's judgment, he did not intend that result.
64 Mr Bathurst submitted that, leaving aside any question of BAL's costs of resisting Mr Royal's claim, a final determination of the contribution proceedings (being that BIL is liable to pay 75%, BAL 15% and Eraring Energy 10%) should result in there being no liability to BIL under the direct claim "because any loss and damage which would otherwise have been suffered was taken up in the contribution claim". I agree with this submission.
65 In my opinion, an order should be made that, in regard to Mr Royal's verdict, BIL is liable to contribute 75%, BAL 15% and Eraring Energy 10%. That order should make it plain that that apportionment applies to the capital amount of the judgment, interest, and the costs payable by BAL to Mr Royal. Once that is the case, no damages are sustained by BAL in respect of these matters and the claim in the direct action that is made for these heads of damage should fail.
66 Putting the matter in a different way, the findings made by Curtis J in the contribution proceedings dealt with capital, interest and costs and determined the degree to which each of BAL and BIL was responsible for the capital, interest and costs payable, as between themselves, to Mr Royal. Once those findings had been made, the liability of BIL for those matters was fully taken up in the contribution orders made. Accordingly, once the contribution findings were made, there was no additional amount, comprising any part of the verdict, for which BAL could hold BIL liable. The question of negligent responsibility for the items comprising the verdict was finally determined as between BAL and BIL.
67 Thus, save in regard to BAL's costs of defending the proceedings brought by Mr Royal, the findings made by Curtis J in the contribution proceedings preclude any claim for damages by BAL against BIL.
68 Accordingly, I would uphold this ground of appeal.